1st science project

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Across
  1. 6. When molten rock erupts on earths surface is called what?
  2. 9. The mountain ranges in the middle of the ocean
  3. 10. the circulation of material caused be differences in temperature and density
  4. 12. The cold and rigid outermost rock layer is called the
  5. 13. as a slab sinks, it pulls on the rest of the plate with a force called
  6. 15. a suggestion that continents move
  7. 16. a metal mined for a profit
  8. 17. a rare and attractive mineral
  9. 18. states that Earth's surface is made of rigid slabs of rocks
  10. 19. The resistance of what being scratched
  11. 20. a huge super continent
Down
  1. 1. The denser plate sinks below the more buoyant plate is a process called
  2. 2. a state of which magnetized objects will orient themselves
  3. 3. This process forms new oceanic crust
  4. 4. forms where two plates separate
  5. 5. forms where tow plates collide
  6. 7. forms where two plates slide past each other
  7. 8. a state that magnetized objects would reverse direction and orient themselves
  8. 11. the magnetic field reverses direction
  9. 14. rising mantle material at mid-ocean ridges create the potential for plates to move away from the ridge with a force called